Agree with Tim. Also, if you are being dragged ANYWHERE, you need to carry a crop, and give her a good smack (NEVER in the head), but in the chest or shoulder, so she stops, then ask her to BACK UP. You need to make sure she is respecting you on the ground. You can do easy practice stuff on the ground, so she leads next to you, quietly, and if she doesn't, she has to be reminded. The crop can be carried, does not often need to be used. But if you use it, think like a horse, just a swift smack. In the wild the herd leader gives a bite, or a kick, in a quick motion. No threatening with their voice, no 2nd chances, just DO it and get it over-with. No need to yell, no need to speak. That is what a horse understands. Grazing is only allowed after ground manners improve, and then that is another test, b/c that is when she will really try to misbehave.